Shoe-nailing machine



, E, D. salma.

SHOE NAILING MACHINE.

,Patented Dec.- 23,1890.

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sm MM n UNITED STA-Tes PATENT Carien.

EDVA'RD' D. CHILDS, .OF MIIVAUKEE, WISCONSIN.

si-ioE-NAII lNeV MACHIVNL,

SPECIFICATION forming partei Letters Patent No. 443,357, dated December 23, 1890.

Application filed August 23,1890.' Seria-l No. 362,812. (No model.)

To @ZZ whom it may concern:

Be it known that I, EDWARD D. CHILDS, of Milwaukee, in the county'of Milwaukee, and in the State of Wisconsin, have invented certain new and useful'Improvements in Feed Mechanism for Shoe-Nailing Machines; and I do hereby declare that the Vfollowing is a full, clear, and exact description thereof.

My invention relates to vshoe-nailing machines; and the invention consists in certain peculiar` and novel features of construction and arrangement, as hereinafter described, and pointed out in the appended claims.

In the drawings, Figure l is a view, partly in side elevation and partly in transverse vertical section, of a structure embodyingmy invention. Fig. 2 is a horizontal cross-section of the same on thev line 2 2 of Fig. 5. Fig. 3 is a similar view on the line 3 3 of Fig. l. Fig. 4 is a similar view en the line -t 4 of Fig. 5. Fig. 5 is an enlarged view, partly in side elevation and partly in vertical cross-section, of my improved feeding mechanism.

The object of my invention is to provide a feeding mechanism for boot or shoe nailing machines which shall be practically continuous in its operation, andwhich can be run at high speed without becoming injured or disordered in any of its parts. This result I attain by virtue of the construction which I will now proceed to describe. Y

Referring to the drawings, A designates a spindle the upper end of which is preferably externally screw-threaded, as at a, to receive an internally-screw-threaded pulley B, which by means of a suitable belt constantly rotates the spindle axially. This spindle is also formed with a central longitudinal channel or bore a', which extends throughout its length, and its lower end is formed with a screwthreaded socket 0.2 to receive the externallyscrew-threaded upper end of a throat-piece C, the said throat-piece having also a centra-l longitudinal bore c, which coincides with the bore of the spindle. The pulley B carries on its upper side two brackets D, between which is journaled a reel D upon which the wire stock E is wound, the strand e of the stock (which may be threaded, twisted, corrugated, or any other wire) extending downward through the bores a c of the spindle and hroat-piece, respectively. The lower end of the spindle A is bifurcated to form two bearing-plates-E` E', in the lower part of which are formed half-sockets c e for the two lower feed-rolls F F, the journals of said rolls being in the lower ends of the oppositely-dispos'ed presser-plates G G and G', which are screwed upon opposite sides of the bearing-plates E E',

as shown at g g. A guard-plate or shield Il is preferably interposed between the presservplate G and the adjacent edges of the bea-ring-plates E', and said guard-plate or shield is secured in position by screws h. The protruding ends of the journals of feed-rolls F -carry intermeshing gear-pinions f f, with one of which meshes a gear-pinion I, which is journaled upon a screw-stud t', protruding from the adjacent bearing-plate E.

J designates a worm-gear, the shaft of which is journaled in half sockets in the presser-plates G, and also in the adjacent edges of the bearing-plates E. The protruding end of the shaft j carries a gear-pinion J which meshes with the gear-pinion I, before referred to.

K designates a worm-shaft, the worm k of which meshes with t-he worm-wheel J, andthe lower end of whichV is stepped into a strap k', which is attached to the presser-plates G G by screws 7a2, as is best shown in Fig. 4. The upperpart of this worin-shaft extends through an offset m of a collar M, which surrounds the spindle A just above the bearing-plates E', and which is secured in position upon the spindle A by a set-screw m', so as turn therewith,and jam-nut m2. Vithin the offset m the worin-shaft K is formed with an annular recess k3, which is engaged by the inner end of a set-screw m3, having a jam-nut m4, and serving to retain the worm-shaft in proper position while at the saine time permitting it to rotate.

At its upper end the worm-shaft K carries a gear-pinion N, which meshes with a gearsection o on the lower end of a sleeve O. This sleeve O surrounds the spindle A immediately above the collar M, and at its upper end it is formed with an offset O', having a number of radially-arranged holes or recesses o', for a purpose to be hereinafter explained.

P designates an E-shaped standard,having at its upper end abearing or hub p and midway of its length a similar hub or bearing p',

IOO

-the spindle A extending` through said hubs or bearings. The lower end of this standard has an opening p? to receive the throat G, and also carries a suitable knife P to sever the wire after each nail has been driven. Upon the end of the upper arm of standard l is journaled a cam-disk Q, which carries a wormwheel q, the teeth of which mesh with a worm q on the spindle A. Upon an arm r, which extends from the hub p', is pivoted midway of its length a lever S, the upper end of which carries a friction-roller s, which is held against the cam-shaped periphery of the cam-disk Q by a leaf-spring s or equivalent means. The lower end of this lever carries a pin 1", which works in an opening in an arm t', projecting from the hub p', before referred to.

The operation is as follows: The spindle A revolves constantly and its worm (1 rotates the cam-disk Q. As long as the frictionwheel 3 is in the depressed portion of the periphery of the cam-disk, pin t is held out of engagement with the sleeve O, aud thus the feed mechanism is inoperative; but when the friction-wheel rides upon the projecting portion of the periphery of this disk the pint is moved into one of the holes or recesses o. This causes the gear-section of sleeve O to remain stationary, while the collar M, rotating with the spindle A, turns shaft l, this causing the gear N to rotate the worm-shaft l, and this, through its worm lf, turns the worm-gear J, the result being t-hat motion is communicated to the gear-wheels J and I, and then through the gears ff to the feeding-rolls li F, so that the lower end of the wire is quickly forced into the sole of the shoe held on the ordinary horn R. By this time the friction-wheel s rides inward onto the depressed portion of the cam-disk Q, the pin tis withdrawn from engagement with the sleeve O, and the feed is stopped long enough to permit the stock to be severed. The subsequent operations are repetitions of those just described.

It is obvious that minor details of constructien may be changed without affecting the essential spirit of my invention as set out in the appended claims.

llaving thus fully described my invention, what l claim as new', and desire to secure by Letters Patent, is-

l. ln a feed mechanism for shoe-nailing machines, a rotary spindle, intermeshing geared feed-rolls mounted at the lower end of the spindle, a train of gear-wheels also located at the lower part of the spindle and meshing with the feed-roll gears, a worm-shaft mounted on the lower part of the spindle and earried thereby and operatively engaging a worm-gear on the axle of one of the feed-rollactuating train gears, a sleeve loosely surroun ding the spindle and geared to the wormshaft, a cam-disk actuated by the spindle, and a lever operatively engaging the disk at one end and at its opposite end intermittently engaging the said sleeve, substantially as set forth.

2. ln a feed mechanism for shoe-nailing machines, a rotary spindle, intel-meshing geared feed-rolls mounted in the lower part of the spindle,a train of gear-wheels meshing with the feed'roll gears, a worm-sl1aft mounted on the lower part of the spindle and carried thereby and meshing with a worm-pinion on the shaft of one of the train-gears, a sleeve loosely mounted upon the spindle and having agear meshing with a gear upon said worm-shaft, and means, substantially as described, actuated by the spindle and serving to intermittently connect and disconnect the sleeve from operative engagement with the spindle, substantially as set forth.

ln testimony that I claim the foregoing I have hereunto set my hand, at Milwaukee, in the county of Milwaukee and State of lViseonsin, in the presence of two witnesses.

EDlVARD D. CHILDS.

Witnesses:

1I. G. UNDni-nvoon, Wir. RLUG. 

